The Bushmaster M4A3 Patrolman's Semi Auto AR-15 Carbine is one of the most popular AR style rifle on the market. This rifle is chambered in .223 Remington/ 5.56 NATO and has a 16" chrome lined barrel. This rifle has a birdcage flash suppressor, A3 upper receiver with picatinny rail, and a removable carry handle. The magazine holds 30 rounds of ammunition and the stock has 6 different positions.